PPC_MSGCLR         57 arch/powerpc/include/asm/dbell.h 	__asm__ __volatile__ (ASM_FTR_IFSET(PPC_MSGCLR(%1), PPC_MSGCLRP(%1), %0)
PPC_MSGCLR        245 arch/powerpc/platforms/powernv/smp.c 			asm volatile(PPC_MSGCLR(%0) : : "r" (msg));